I came across this camp information. Definitely not convenient locations and I don't know anything about them - but sharing in case anyone is interested -

Camp Northwood
Remsen, New York
Traditional sleep-away camp for socially immature, learning-challenged, and high-functioning autistic kids. A structured, noncompetitive setting lets our staff concentrate on instruction and reinforcement of age-appropriate social skills. Campers enjoy a variety of activities. 2:1 camper/staff ratio.

Camp Sequoia
Pennsburg, PA
An overnight camp for boys ages 7-17, many with ADHD & twice-exceptional. Our innovative program integrates building Frustration Tolerance with Michelle Winner's Social Thinking framework helping campers develop social skills through a FUN, active, nurturing and traditional camp environment. 2:5 staffing ratio.

NYU Summer Program for Kids
New Rochelle, NY
A 7-week, evidence-based treatment program for children ages 7-11 with ADHD & behavior disorders. The program builds self-esteem & helps kids develop attentional, organizational, & friendship skills. Nationally recognized clinicians supervise college staff.